About This Station and Mission

This personal weather station is sited over short cut grass inside Valentine with tree canopies throughout area. Mission is to bring the most accurate temperature and rainfall readings inside Valentine along with high quality images, timelapse along with an accurate forecast provided by North Platte NWS forecast office. Temperature sensors are triple redundant and calibration checked at 3 points with NIST certificate of traceability thermometer for accuracy. Included is snap shot example of data feed from triple sensors, dated Nov.5, 2017 8am Click for image

This station is powered by a Davis Vantage Pro2 weather station, the triple walled temp/humidity sensor tube inlet is located 5'8" above ground. Anemometer is mounted at 33' with tree obstructions especially summer foliage so wind accuracy suffers most during the foliage season. Temp/humidity sensor (Sensirion SHT31) temperature accuracy plus/minus (.2) and ( 2% humidity) across entire range with 24/7 aspiration for highest accuracy. The live online rain bucket upgraded in Feb. 2016 8" diameter heated Texas Electronics, Inc. TR-525USW with accuracy (+/-) 1% with rainfall rates 2" per hour or less. (Corrections are made with official 8" SRG if needed). Other rain and snow gauges in use are NWS standard style 8" the official rain gauge for this station along with two-Cocorahs 4" diameter gauges for redundancy.

Frozen precipitation especially snowfall with wind can be tricky and under reported by 50% or more. Heated tipping bucket rain gauges have issues with evaporation and warm air currents rising so can under report. Valentine experiences very cold powdered Arctic snows combined with wind making it especially tricky so the standard manual rain gauge is most reliable. Modern unmanned professional automated stations have went with hot plate technology, more reliable vs heated tipping bucket. The biggest weakness of manual gauges they don't show trends or rate of precipitation like automated gauges. All gauges can become inaccurate with high wind so wind shielding is recommended. The ideal shield and most efficient is natural wind blocking vegetation like (This station has) but for unprotected open areas (IE airports) the DFIR (Double Fence intercomparison reference ) is best but rarely used because of maintenance/expense/large area footprint.

Cameras in use are Hikvision 3-4 megapixel IP cameras with 1 on-demand live stream. Station is a member of APRSWXNET/Citizen Weather Observer Program and official observer for Cocorahs along with Skywarn spotter for NWS.

Valentine Nebraska

Valentine incorporated as a village in 1884, is named for Edward K. Valentine who as a congressman from Nebraska was the chairman of the House Committee on Agriculture during his six years in office. He was instrumental in getting local settlers' grievances redressed by the federal government.

Valentine was nearly destroyed two years in a row: a large storm with extremely high winds caused extensive damage to trees and buildings in July 2005, and in July 2006 the "Big Rock Fire" engulfed over 3,000 acres of land.

Valentine participates in an annual re-mailing program where thousands of pieces of mail flow into the local United States Post Office so that they can be re-mailed with a special Valentine's Day postmark and verse. In 2007, National Geographic Adventure magazine included Valentine in its list of the best ten wilderness towns and cities

With a humid continental climate, Valentine experiences extremes of heat and cold annually. The monthly daily average temperature Period of Record : 07/01/1889 to 06/10/2016 from 20.9 F in January to 74.4 F in July, while there are 6.7 days of 100 F + highs, 39.8 days of 90 F + highs, 46.3 days where the temperature does not rise above freezing, and 23.3 days of sub -0 F (-18C) lows. Precipitation is low, with an annual average of around 20 inches, but not quite low enough for the climate here to be classified as semi-arid. Snow reaches a peak in March and averages 34 inches per season. This snowfall average for area is debatable where airport tends to record less measured snow being open and wind blown area. The average window for measurable snow ( 0.1 in ) October 28 thru April 10; falls in May or September are rare, though one-day totals of 6 in or more have occurred in both months. The area is very sunny, averaging 2,937 hours of bright sunshine annually. Extreme temperatures range from -39 F (-39C) on December 22, 1989 to 114 F (45.5C) on July 2, 1990, with temperature extremes recently -31F (-35C) airport December 19, 2016 and same day -37F at another station on east side of Valentine.

About This Website

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